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PATTERN MBGHANISM POR LooMs. No. 498,956. Pa-tentedJune 6, 1893.

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(No Model.) v 2 Sheets-Sheet 2) G. Fi HUTCHINS. PATTERN MEGHANISM FOR LOOMS.

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mw 5 9, jf 8 0j, 9 M A O N UNITED STATES PATENT OFFICE.

GEORGE F. I-IUTOHINS, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO THE KNOWLES LOOM WORKS, OF SAME PLACE.

PATTERN MECHANISM FOR LOOIVIS.

SPECIFICATION forming part of Letters Patent No. 498,956, dated June 6, 1893.

l Application tiled July 29,1892. Serial No. 441,593. (No model.)

To all whom it may concern:

Be it known that I, GEORGE F. HUTcrnNs,

la citizen of the United States, residing at lMechanism for Looms; and I do hereby declare that the following is a full, clear, and exact description thereof, which, in connection with the drawings making a part of this specification, will enable others skilled in the art to which my invention belongs to make and use the same.

My invention relates to the shedding mechanism of looms, and the object of my invention is to provide an auxiliary pattern indieating chain to be used when weaving long patterns requiring a great number of bars, and

which auxiliary chain will be lighter and less expensive than the ordinary iron roll and tube chain, and which can be put on or taken off of the loom without disturbing the regular pattern mechanism except to remove or replace the regular pattern chain.

My invention consists in certain novel features of construction and operation of an auxiliary pattern indicating chain combined with the ordinary shedding mechanism of a loom.

I have shown in the drawings sufficient portions of the well known Knowles loom, shown and described in United States Reissue Patent No. 7,784, July 3, 1877, with my improvements applied thereto, to illustrate the nature thereof.

Referring to the drawings, Figure 1 is a side elevation of a portion of the Knowles loom head motion,looking in the direction of arrow a, Fig. 2. Fig 2 is a broken plan view, with some of the parts shown in Fig. 1 omitted, for the sake of clearness. Fig. 3 is a sectional detail, on an enlarged scale, through the indicator lever and hook joint, taken at the point indicated by dotted lino, X-X, Fig. 1.

In the accompanying drawings l are the loom arches, 2 the headframe, 3 the head arms, and 4 and 5 the top and bottom cylinder gears, mounted on shafts journaled in the head frameat 6 and 7.

8 is the front vibrator gear of a series arranged side by side, which are pivoted at 9 on the vibrator levers 10, which are pivoted at 1l on the heel pin 12. The vibrator connectors 13 are pivoted at 14 on the vibrator gears, and their opposite ends, not shown, hooked to the harness levers or duplex levers.

15 is the regular pattern cylinder, carrying the pattern chain l5', made up of rolls and tubes in the ordinary manner, and mounted in journals in the head arms 3, and driven through gear 16 fast on the pattern cylinder shaft 15, and reverse gears 17 and 18, from the bottom cylinder gear shaft, all in the usual manner and as fully shown and described in United States Patent No. 398,328, of February 19, 1889, except that in said patent a star Wheel and pin wheel driving mechanism for the regular pattern cylinder is shown, instead of the gear driving mechanism.

All of the above parts are constructed and combined together in the ordinary way.

I will now describe my auxiliary pattern indicating chain. The auxiliary pattern cylinder 2O is journaled in the lower ends of arms 2l, fastened by set screws 22 to the heel pin 12. I have shown in the drawings the pattern cylinder 20 carrying the well known form of pattern chain, consisting of Wood bars 23 joined together by small wire links 24, and staples 25. Indicator pins 23 .are screwed into the bars 23 as desired. 'lhe auxiliary pattern cylinder 2O is turned by means of` the sprocket wheel 26, fast on the outer end of shaft 27, supported in the lower ends of arms 21, and connected by a chain 28 with an equal sprocket wheel 29 fast on the end of cylinder shaft 15 outside of gear 16. Pivoted at 30 on vibrator levers 10 are auxiliary indicator levers 3l, provided with a hook end 31', which extends around the heel pin 12 for convenience in taking out an intermediate vibrator lever, and provided at their extreme ends with the curved foot 32, adapted to work with indicator pins 23. Also at 30 on vibrator levers 10 are pivoted the lower ends of hook levers 33, see Figs. 1 and 95 IOO the two side bars 37, 37' and the connecting bar, 37", see Fig. 2. To the connecting bar 37" ofthe frame 37 is fastened a knife 38, adapted to engage the hook ends of the hooks 33. The side arm 37' of the frame is extended as shown at 39, Figs. 1 and 2, and carries in a fork at the end thereof, a roll 40 fitted to turn freely on a pin 41.

On the end of the top cylinder shaft 6' is fast a cam 42, adapted to work with roll 40, and lift the frame 37, 37', 37". The proportions of the cam 42, and distances of roll 40 and knife 38, from the center of heel pin 12, are such that the movement imparted to the vibrator levers 10 through hooks 33, is the same as that imparted to them by the regular pattern chain 15', or such as to properly throw the vibrator gear 8 into action with either top or bottom lcylinder gear 4 or 5, as indicated. The cam 42 is so proportioned and timed as to lift the vibrator levers 10 in the same time as the regular chain 15',and the pattern chain cylinder 20 is so timed that the indications of pins 23' is completed before the cam 42 lifts the hooks 33. The spring 35, which actuates the hook lever 33, is provided to guard against injury to the parts, in case they get out of time, vso that pins 23' operate to lift the indicatorlevers 31 when theknife is in position to prevent the hooks 33 catching over the top of the knife. The spring 35 has sufficient tension to lift the hook positively, when it is clear, but gives without damaging the parts in case of interference. A lug 43 on the hook 33 engages a projection 43' on the indicator lever 3l, and prevents the spring 35 from pushing the hooks 33 forward, when the knife 38 is up clear of them. Comb teeth 44, fast on the back side of the heel shell 45, keep the indicator levers 3l properly in line to engage each its own row of indicator pins 23', on the auxiliary pattern chain. The heel shell 45 is provided with a handle 46, see Fig. 2, by which it may be rotated about a quarter revolution, when the levers 10 can be unhooked or lifted from the heel pin 12, and any intermediate vibrator lever removed from the series without disturbing the others.

In a loom provided with my improvements, theAeutire pattern or indicating service will be carried on the auxiliary pat-tern cylinder 20, in which case the regular roll and tube chain 15' will be removed from the regular cylinder 15, and the pattern indicated entirely from the auxiliary chain. The regular pattern cylinder l5 remains on the loom, and is driven by the regular pattern driving 1nech.

anism, as above described; and the auxiliary pattern cylinder 2O is driven by the regular pattern cylinder 15, through the sprocket chain 28, and sprocket wheels 29 and 26,and this is the only office of the regular pattern cylinder 15 in this case.

By means of the auxiliary pattern chain, for the purpose above stated, I am enabled to economize in the material, and in the labor of constructing the chain, for the reason that the stock of said auxiliary chain is much cheaper, and more easily and readily put together, than the regular roll and tube chain.

It will be understood that the details of construction of the parts of the loom shown in the drawings, may be varied somewhat if desired.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a loom, the combination with the regular pattern driving mechanism, of an auxiliary pattern cylinder, carrying a peg chain to be used in lieu of the regular pattern chain, and adapted to act on auxiliary indicator levers, to operate, th rough intervening mechanism, the regular vibrator levers and said indicator levers and vibrator levers, and an intermediate connection between the regular pattern driving mechanism and the auxiliary pattern cylinder, for drivin g the auxiliary pattern cylinder from the regular pattern driving mechanism, substantially as set forth.

2. In a loom, the combination with the regular pattern driving mechanism, of an auxiliary pattern cylinder driven from the regular pattern driving mechanism, and carrying a peg chain,and peg chainindicator levers pivoted on the regular vibrator levers, and said vibrator levers, and vibrator hooks pivoted on said vibrator levers, and a lifting frame pivoted at one end, for operating the indicator hooks, and a cam fast on the top cylinder shaft for operating said lifting frame, substantially as shown and described.

3. In a loom of the class described, the combination with the regular pattern driving mechanism, of an auxiliary pattern cylinder driven from the regular pattern driving mechanism through a sprocket chain, and sprocket wheels, one of said sprocket wheels being fast on the regular pattern cylinder, and the other being fast on the auxiliary pattern cylinder, and an indicating surface carried on the'auxiliary pattern cylinder, and auxiliary indicator levers, pivoted on the regular vibrator levers, and said vibrator levers, and spring actuated indicator hooks also pivoted on the regular Vibrator levers, and a lifting frame hinged at one end, and operated by a cam fast on the top cylinder shaft, and said cam, said lifting frame adapted to engage the indicator hooks to operate the regular vibrator levers, according to the indications of the auxiliary pattern surface on the auxiliary indicator levers, substantially as set forth.

4. In the shedding mechanism of a loom of the class described, the combination with indicator levers, of a movable heel shell provided with comb teeth, between which the indicator levers extend, substantially as shown and described.

GEORGE F. HUTCHINS.

Witnesses:

JOHN C. DEWEY, KATIE FARRELL. 

